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What is a non-capturing group in regular expressions?
...over it:
\b(\S)(\S)(\S)(\S*)\b
This regex matches words with at least 3 characters, and uses groups to separate the first three letters. The result is this:
Match "Lorem"
Group 1: "L"
Group 2: "o"
Group 3: "r"
Group 4: "em"
Match "ipsum"
Group 1: "i"
Group 2: "p"
...
Set TextView text from html-formatted string resource in XML
...use HTML markup in your Strings, you don't have to change a lot:
The only characters that you need to escape in your String resources are:
double quotation mark: " becomes \"
single quotation mark: ' becomes \'
ampersand: & becomes & or &
That means you can add your HTML mar...
Executing a command stored in a variable from PowerShell
...h was included, verify that the path is correct and try again. At :line:14 char:1 + & <<<< $cmd1
– Travis
Aug 28 '10 at 23:29
...
Studies on optimal code width?
...ght Margin" in your IDE of choice, it is likely that it will default to 80 characters. I tend to change it to 120 for no reason other than it was the standard at a company I was with a few years back, and no other company has told me to do it differently.
...
How to create a trie in Python
...a linear search. But the search would be limited to the number of possible characters -- 27 if we include _end. Also, there's nothing to be gained by creating a massive list of nodes and accessing them by index as he suggests; you might as well just nest the lists.
Finally, I'll add that creating a...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
...| true true true true false false| true true true true false false
char | true true true true false false| true true true true false false
hyphn| true true true true false false| true true true true false false
two | -err- true -err- true -err- false| true true true tru...
How can I get the behavior of GNU's readlink -f on a Mac?
...es, sys
libc = ctypes.CDLL('libc.dylib')
libc.realpath.restype = ctypes.c_char_p
libc.__error.restype = ctypes.POINTER(ctypes.c_int)
libc.strerror.restype = ctypes.c_char_p
def realpath(path):
buffer = ctypes.create_string_buffer(1024) # PATH_MAX
if libc.realpath(path, buffer):
ret...
Regex to remove all (non numeric OR period)
... What about joe.smith ($3,004.50)? Simply removing offending character classes can go quite wrong.
– Matthew Gunn
Dec 3 '15 at 9:23
2
...
Memory footprint of Haskell data types
...e) which take 2. GHC actually has a cache of small values of type Int and Char, so in many cases these take no heap space at all. A String only requires space for the list cells, unless you use Chars > 255.
An Int8 has identical representation to Int. Integer is defined like this:
data Integ...
Create objective-c class instance by name?
...runtime.h>
//Declaration in the above named file
id objc_getClass(const char* name);
//Usage
id c = objc_getClass("Object");
[ [ c alloc ] free ];
Under the Objective-C (1.0 or unnamed version) you would utilize the following:
#import <objc/objc-api.h>
//Declaration within the above name...